Genuine BMC replacement part. This complete linkage kit for the Fourstroke (LT - 120mm) allows you to replace the original linkage or convert a 100mm Short Travel model into a 120 mm Long Travel version. The kit includes the linkages, shock yoke, axles, bolts, bearings, and washers. - Lower Link Bearing: Enduro, BB 6900 LLU MAX BO-blk, Bearing 22x10x6 - qty 4 - Upper Link Flange bearing: Enduro, BB F6800 LLU MAX BO-blk, Flange Bearing 19x10x5 - qty 2 - Upper Link Bearing: Enduro, BB 6800 LLU MAX BO-blk, Bearing 19x10x5 - qty 4